Feed-water heater and smoke-box protector.



G. S. ALLEN & B. F. GRONEY.

FEED WATER HEATER AND SMOKE BOX PROTECTOR.

APPLIOATION FILED AUG, 15, 1910. 989,938, Patented Apr. 18, 1911.

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' CHARLES s. ALLEN AND BENJAMIN F. CRONEY, ornns MOINES, IOWA.

FEED-WATER HEATER-AND SMOKE-BOX raornc'ros.

Specification of Letters Patent. 1 Patented Agn 1911, Application filed August 15, 1910. Serial No. 577,319. a

To all whom it may concern:

Be it known that we, CHARLES S. A LEN and BENJAMIN F. CRONEY, citizens of the United States, residing at Des Moines, in

the county of Polk and State of Iowa, have invented a new and useful Feed-Water Heater and Smoke-Box Protector, of which the following is a specification.

The object of this invention is to provide improved means for utilizing waste heat in preliminary heating of feed Water for steam boilers.

A further object of this invention is to provide improved means for utilizing a water jacket, adapted to contain feed water for steam boilers, in protecting a smoke bo:

from excessive and damaging heat.

A further object of this invention is to provide an improved construction for a feed water heater adapted to be placed in and removed fronr a steam boiler independent of the primary construction and use of such boiler.

Our lnventionconsists 1n the construction,

arrangementand combination of elements hereinafter set forth, pointed out in our claims and'illustrated by the accompanying drawing, in which Figure 1 is a longitudinal vertical section of the forward end portion of a steam boiler, the front closure thereof being removed, illustrating one form of our improved construction as adaptedto be-built into the boiler coincident with its primary construction. .Fig. 2 is a similar view illustrating our improvement constructed as an attachment and adapted to be applied to the boiler independent of its primary construction. Fig.3 is a cross-section on the indicated line 3*3 of Fig. 2. Fig. 4 is a horizontal section on theindicated line 4-4L'of Fig. 2.

- In Figs. 2, 3 and 4 water doors are shown in the attachment. Fig. 5 is a view similar to Figs. 1 and 2 illustrating the construction of our improvement exteriorly of the front end portion of the boiler and is designed to be applied thereto coincident with the many construction of the boiler.

In the construction of the apparatus as illustrated in Fig.1 the numeral 10 designates a boiler having flues 11 longitudinally thereof and communicating at their forward ends through a crown sheet 12 with a smoke box 10, all of common and well known coir ing openings in the shell or lining 13 and the smoke box 10? .ne smoke stack 17 is secured to the lining 13 by a flange 18 riveted to said lining and is secured to the smoke box by a flanged collar 1% riveted to the smoke stack'and smoke lqox. Exhaust pipes 20 (one of which isshown in Fig. 1) lead laterally through the smoke box 10 water space 16 and lining 13 and are adapt ed toconvey the exhaust flOh. engine cylinders not shown to the lnter or of saiddin ng. The front of the boller may be closed by any desired means and in respett of Figs. 1 and 5 of the drawlngsuch clgsure forms no part of our intention". A supply pipe 21 leads from a source of water supply not shown through the lower portionof the smoke box' 10 and conmiunicates with the lower portion of the water space 16. The supply pipe 21 is controlled by a check valve 22 which prevents return flow of the water from the space 16. A feed pipe 23 is mounted through the upper portion of the smoke box 10 and leads from the upper portion of the water space 16 toj -the interior of the boiler at some point below the water line therein and is adapted to convey heated feed water from the space 16 to the boiler. The feed pipe 23 is controlled: by a check valve 21 which prevents return flow of water to the space 16. In theipra'ctical use of this device the space 16 is filled with water and such water is heated by radiation from smoke and exhaust steam contained in the lining 13 in the passage of such smoke and steam from the fiues 11 and exhaust pipes 20 to the smoke stack 17.

In the construction of the apparatus as shown in Figs. 2, 3 and'etfthe boiler 10, s1gnoke box 10 flues 11 and crown sheet 12 are the same as in Fig.- 1. In this construction the smoke stack 17 is flanged and riveted at.

its lower end directly to the smoke box 10? in a common manner. 'Our attachment. in this instance is constructed as follows'/i"'A casing 25 is contracted or interiorly flanged at one end and a lining 26 is mounted within, concentric with and spaced from the casing and is expanded or exteriorly flanged at the opposite end. The flange of the casing ing is riveted of the casing, a water space 16 28 are formed in 26 respectively and registering lower end of the smoke stack 17. ing 26 is flanged around the hole 28 and is riveted to the casing 25 around the hole 27. Semi-circular hollo'w doors 29, 30 are mounted in the forward end portion of the lining 26 and are pivoted therein by means of pipes to the opposite'end portion thus forming and producing between them. Holes 27, the casing=25 and lining with the 31 aitording communication between the for-- ward end port ion of the Water space 16 and the interior of the doors. Any desired means may be employed to retain the doors 29; 30 in closed position. -Exhaust pipes 20 communicate laterally through the smoke box 10*, casing 25 and lining26and are adapted to convey exhaust steam from engine cylinders not shown to-the interior of said lining. Asupply acheck valve -22 communicates through the lower portions of the smoke box -10 and casing 25 with the water space 16 and a feed pipe 23fhaving a check valve 242communicates through the upper portions of the smoke and exhaust steam boiler as previously smoke box have been used indefinitely with out it; thus providing improvement insteam l b0ilers not constructed and designed espe-.

a means for utilizing and embodying our cially to receive'it. I

In the honstruction of the device as illustrated in Fig. 5 the boiler 150, smoke box 10, fines 11 and crown sheet 12 are the same as in Figs. 1, 2, 3 and 4. A casing 32 is mounted around, concentric with and spaced from thesnaoke box 10 andsaid casing is conttacted or interiorly flanged at its ends. The rear flanged end portion of the casing 32 is rivetedcomunctively with the crown 25 is riveted to' one end portion of the lining26 and the fiang'e ot sauna The lin-.

pipe 21 having water to the heat. This appa after a boider and riveted to the smoke box-10. 17 is connected to the casing 32 by a flanged interior. of the lining,

said smoke box,

' communicating with valve controlled water rating with the top of thespace 2. In -a steam boilersheet to the boiler 10 while the front flanged end portion of said casing is riveted to the forward end portion of the smoke box. Begisterin holes are formed in the smoke box 10 an casing 32 to receive the lower end portionot a smoke stack'll The lower end of thesmoke stackli is flanged and The stack 'Icol1ar-19 riveted tov said stack and easing.

Exhaust pipes 20", one ofwhich is shown, are mounted laterally through the casing "32 and smoke box 10 and are adapted to convey exhaust steamfrom engine cylinders not shown to the interlor of said smoke box. A supply pipe 21", provided with a .check valve 22, is mounted through the lower portion of the casing 32' and communicates with a water space 16! between said casing and .the smoke box. A feed pipe 23 provided witha check valve24", is mountedin the upper portion of the casing 32, communicates with the upper. water space 16*. and is ada'ptedto convey heatedwater from said space to the boiler. The front portion of the smoke box 10 may be closed in any desired manner;

In the practical use otthe apparatus as shown in Fig. space 16 by radiation fromsmoke and xhaust steam supplied to the smokebox by the flues 11 and exhaust pipes 2.0

In each and either instance the water jacket, however constructed, serves to contain water to be heated by radiation otherwise wasted or destructively employed and also serves to protect the smoke box from the destructive influence of smoke, heat therein and the augmenting the exhaust steam- We claim as our heat of invention+ portion of the excessive 1. In a steam boiler having asmoke box, I

the combination of a lining mounted Within and spaced fromand concentrically of said smoke box,. said lining formed with expanded end portions riveted to-said smokebox, a smoke stack ext.endingthroughsaid smoke box and lining and communicating w'ithfthe] said smoke i stack riveted-to'said lining a flanged collar on said smoke stack rivetedto exhaust "steam pipes extending through' said box. and-lining and the interior of the .latter, a valve-controlled water [supply pipe. communicating with, the bottom of thespace between the smok box and lining; and a- .t'eed pipe communibetween said" smoke box and lining.

having .a' smoke box, the combination of a water jacket within and concentric of said smoke boxQsmoke and steam exhaust pipes communicating through rate hollow doors mounted in said water for supplying and discharging Water from jacket and pipes hinging said doors to said said Water jacket.

water jacket, said pipes communicating with CHARLES S. ALLEN.

the interior of the doors and the interior of BENJAMIN F. CRONEY. 5 the Water jacket respectively whereby a; Witnesses:

flow of water is permitted between said S. G. SWEE water jacket and hollow doors, and means v EARL M. SINCLAIR.

Copies oi flhla patent may ba -obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, D. G. i 

